Chen Xu, MD - AHN Neurosurgery

Alexander Whiting, MDDr. Whiting is a neurosurgeon and director of epilepsy surgery for AHNs Neuroscience Institute. He specializes in state-of-the-art epilepsy treatments, including stereoelectroencephalography (SEEG), seizure focus resections, laser ablations, vagal nerve stimulation, and responsive neurostimulation. Additionally, he has clinical interests in complex spine and brain disorders, and offers a range of surgical options and interventions for these conditions. Dr. Whiting completed his residency at the Barrow Neurological Institute in Phoenix, Arizona. He completed his fellowship in epilepsy surgery at the Cleveland Clinic in Cleveland, Ohio, and was awarded the American Epilepsy Societys prestigious Young Investigator Award. Dr. Whiting cares for patients ages 18 and older. He provides minimally invasive surgical options for a wide range of neurosurgical disorders. His practice philosophy includes utilizing proper intervention with each individual patient to achieve optimal treatment outcomes.

Dr. Matthew R. Flanagan is a sports medicine specialist at the AHN Orthopedic Institute in Washington, PA, with expertise in treating a wide range of sports-related injuries and conditions. His areas of focus include concussion management, joint injuries, and various therapies such as osteopathic manipulative therapy and ultrasound-guided injections. With a fellowship from the Allegheny Health Network and a medical education from the Philadelphia College of Osteopathic Medicine, Dr. Flanagan is board-certified by the American Board of Internal Medicine. He is dedicated to providing comprehensive care for athletes and individuals suffering from musculoskeletal issues, ensuring a tailored approach to each patient's needs. Generated from the website

Dr. Cerejo is an interventional neurologist with fellowship training in endovascular treatment of blood vessel disorders of the brain, neck, and spine. He specializes in diagnosis and treatment of ischemic stroke, TIA, and intracerebral hemorrhage. Specific conditions include intracranial aneurysm, arteriovenous malformation, carotid-cavernous fistula, epistaxis, carotid artery and vertebral artery dissections, carotid artery and intracranial stenosis or blockage, dural arteriovenous fistula, spinal cord malformations, transient ischemic attack (TIA), and vertebral artery stenosis and blockage. His expertise includes acute stroke therapy, cerebral and spinal angiography, endovascular aneurysm treatment (coiling and flow-diversion), pre-operative tumor embolization, stenting, and vascular malformation embolization.Dr. Cerejo completed his residency in neurology, followed by fellowships in vascular neurology and endovascular surgical neuroradiology at the Cleveland Clinic in Cleveland, Ohio. Certified by the American Board of Psychiatry and Neurology with a subspecialty certificate in vascular neurology, Dr. Cerejo is co-director of endovascular services at the Allegheny Health Network (AHN) Cerebrovascular Center. He is a member of American Heart Association, American Stroke Association, American Academy of Neurology, Association of Indian Neurologists in America, Society of Neurointerventional Surgery, and Society of Vascular and Interventional Neurology. Dr. Cerejo is a former blogger for Stroke, a journal of the American Heart Association/American Stroke Association. His current research focuses on mild acute ischemic stroke with large vessel occlusion. Dr. Cerejo has medical privileges at Allegheny General Hospital.